Activity gym



FIG. 1 is a top left front perspective view of an activity gym showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines are for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an activity gym, as shown and described. 